If she sends an email that asks a question but it's purpose seems to be just to start an argument or email war how do I respond.
i.e "Who gave you permission to do that" ( it was a small thing regarding using a joint asset that she regards as hers so i didn't need her permission )
Separate yourself financially from your wife.
Arguing over money is not even a mediocre way to attempt reconciliation after infidelity. I'd accept I was depressed or confused and vulnerable before: "Don't touch my money. Mine mine mine not Ours."
is she a loser or what?
Use your money to go out and start having a great time with other people. TGIF.
Personally, my favorite response, after you use, "I'm busy, I'll talk to you later" a few times is: "If you haven't notice, I don't want to talk to you any more." "You need to get a life" is a good one too.